Perennial polycultures and Managed Intensive Rotational Grazing (MIRG) By Lydia Carpenter - Manitoba Eco-Journal Permanent Pasture stands can be maintained by use of perennial polycultures that imitate the diversity of natural ecosystems. A diverse grouping of plants consisting of grasses, forbs, and woody species can make up a perenni- al polyculture and be used as pasture for grazing animals (ruminants), including cattle, sheep and goats. Animals on a perennial polyculture can contribute to nutrient cycling and an increase in soil organic matter. Established, maintained and healthy perennial pastures have also been shown to have a large capacity for carbon sequestration. On our farm in Western Manitoba, we have counted over 30 different species of both native and non-native perennials and biennial forages, including nitrogen-fixing legumes such as alfalfa, pea-vine and various species of clover. These plants populate our permanent pasture that maintains a flock of sheep, a
